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47-11
®
SERVICE- L90LS HYDRAULIC VALVE
Tank connection
T1 [25]
Pump connection
P1 [26]
Pump connection
P2 [32]
Tank connection
T2 [33]
Separate tank connection for
pilot circuit, TP [40]
Tank connection
T3 [34]
LS connection from parallel
valve LSP [31]
Connections
LS, PX, PL
Port relief valve [76]
Service port connection A,
section 1
Main pressure
relief valve
[16]
Pump unloading function BEN[22]
Spool actuator C[50]
Spool actuator ECH[50]
Spool actuator PC[50]
Pilot pressure supply for external use, PS.
Connection to external pilot oil filter YS[39].
Pilot pressure supply R[37]
Service port connection B,
section 3
Feed reducing [75]
558-02110
L90-K220
495B, 595B RTC
558-02175
STEERING 830B
***not all BARKO L90LS valve configurations listed above***
558-01621
STEERING 930B, 937B
558-02118
3-Sec / 12V 930B, 937B
BARKO P/N
Valve
Barko Application
BARKO Machine Applications for L90LS HYD VALVE:
The L90LS is a stackable, multi-section, load-sensing,
pressure-compensated directional valve for mobile
machines.
It is designed for working pressures of
up to 320
bar
and a maximum pump
flow of 200 l/min
. The valve can
be given excellent simultaneous-operating characteristics,
which enable several machine functions to be operated
responsively at the same time, regardless of the sizes of
individual loads.
1. L90LS HYDRAULIC VALVE OVERVIEW
.
1.1 Typical Valve Layout & Technical Data (see Fig-1)
Fig-1
Ÿ
Feed reducing valves range 25 - 330 bar (363-4785 psi)
Ÿ
Tank connection
max. 20 bar (290 psi)
Ÿ
Internal pilot pressure 22, 35 or 43 bar (320, 508 or 625 psi)
Pressures
Ÿ
Pump connection
max. 260/320 bar (3800/4600 psi)
Ÿ
Service ports
max. 280/350 bar (4000/5000 psi)
Ÿ
Return from service port
max. 150 l/min (40 US gpm)
Recommended Flow Rates
Ÿ
Service port, w/ compensator max. 90 l/min (24 US gpm)
Ÿ
Pump connection
max. 200 l/min (50 US gpm)
Ÿ
Service Port, w/o compensator max. 125 l/min (33 US gpm)
circuit, Target Contamination Class 18/16/13 according to ISO 4406 must not be exceeded.
Filtration must be arranged so that Target Contamination Class 20/18/14 according to ISO 4406 is not exceeded. For the pilot
Filtration
06/04/2019
Updated
SERVICE
Содержание 830B
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